Rotary pump



Jan. 3, 1928. 1,654,883

J. F. JAWOROWISKI ROTARY PUMP Filed Jan. 11, 1926 3 Sheets-Sheet 7 Jan. 3, 1928. 1,654,883

. J. F. JAWOROWSKI ROTARY PUMP Filed Jan. 11. 1926 s Sheets-Sheet 5 U FJfiwoRowsm Patented Jan. 3, 1928.

UNITED STATES 1,654,883 PATENT OFFICE.

JOSEPH F. JAWOROWSKI, OF CLEVELAND, OHIO, ASSIGNOR, BY MIJSNE ASSIGNMENTS, TO JOSEPH F. JAWOROWSKI AND SAMUEL DETTELBACH, BOTH OF CLEVELAND,

ROTARY PUMP.

Application filed January 11, v1926. Serial No. 80,497. I

Fig. 2 is'an end view and vertical section on line 2-2 of Fig. 7. Fig. 3 is a perspective view of one abutment .section; Fig. 4 a side view of the spring used with the abutment sections; Fig. 5 aperspective view of the other half section of the abutment; and Fig. 6 a perspective view of the abutment section andspring assembled. Fig. 7 is 'a vertical section longitudinally'of the pump, showing the main shaft and abutment member in elevation. Fig. 8 is a vertical section transversely of the'pump on line 88 of Fig. 7.

Fig. 9 is a horizontal section on line 9'9 of Fig. 7. Fig. 10 is another horizontal section on a higher plane as indicated by linelO-IO of Fig. 7. Fig. 11 is a sectional view of a pumping disk secured by a in upon the main shaft. Fig. -12 is a sectlonal view of one side plate of the pump, and Fig. 13 is a perspective view of the main pump body. Fig. 14 is a perspective view of the connecting ferrule for the side plate. 15, sheet 2, is a sectional view of a pumplng disk securedby a-ball upon the main shaft. Fi s. 16 and 17 are enlarged sectional views a modified form of abutment member, Fig. 16 being a cross-section on line 16--16 of Fig. 17.

Thepump comprlse's a main body 2 of partly circular outline having a spreading base 3 of narrower width than the main body I which possesses perfectly flat faces on opposite sides thereof to permit a pair of closure plates 4 and to be bolted thereto together with thin gaskets 6 of the same shape as each plate and the'openings therein. To facilitate a true alignment between the body and side plates and the attachment thereof together with the thin gaskets, each plate is provided with a circular opening and 'seat 7 in the upper part of its flat face into which a beveled ferrule or connecting bushing 8 is tightly pressed, the ferrule extending about half its length beyond the face of the plate to permit its entrance into the counterboard end of a cross bore 9 in the top portion of body 2. Each counterbore is deep enough to over the projecting part of a ferrule 8 and also sleeved snugly over a round hub extending from the closureside of each plate, thereby with t e openingsin the plate and permittin the gasket and plate to be removed and rep aced together or as a unit,'and the ferrule and hub also co-act to ali the side plates and the several openings t erein with the corresponding openings in body 2. Thus,

body 2 has a large roun opening 11 which receives 'the two hubs 10 and forms a working chamber for a rotary member or piston P mounted upon a shaft 1 extending through central openings in' the ubs. Preferably one end of the shaft projects into a closed opening 14 in closure plate and the other end extends through an elongated extension 15 on plate 5 and also through a packing land 16 affixed to the extension.

Piston comprises a round hub 17 sleeved and keyed upon shaft 12; Thus, in Fi 11 I show a channel 18 milled diametrical y inthe end faceof hub 17 to reoeivethe projecting ends of a locking pin 19 carried by shaft 12. 'In Fig. 15 I 'show a steel ball 19 projecting into a oove 18' upon the inside of a hub 17 the all being seated within a tapering recess 12' in the shaft. In either case it is desirable that the pin or ball shall be wholly confined within the hub 17 so that the circumference of the hub will be smooth and closed at each side of the annular wall orfiange 20 of the piston, and which wall or flange extends annularly in an obli ue plane around the hub to divide the wor ing chamber or opening 11 in body 2 into two working spaces which communicate with or open into a cross chamber 21. This cross chamber is closed at its ends by the side plates 4 and 5, see Fig. 10, and divided into separate-inlet and outlet assages by the flat extensions 22 and 23 o a pair aligning the gasket and its openings receive the ferrule freely and permit the side 1 plate to be'bolted tightly against the gasket and body, but each gasket is sleeved tlghtly of abutment members or sections 22' and 23',

respectively. The flat extensions 22-23 are each one-half. as thick as the abutment secother. an each extension is long enough 9 side plates are formed with ribbed or offset portions 25 having vertical passages 26 which admit the abutment members and afl'ord open communication with the ferrules or bushings 8 and the cross bore 9 in body 2, see Fig. 7. The abutment sections are rounded or tapered at their inner edges 27 where they are held oppositely in constant bearing engagement against the flat sides of the oblique wall or flange of the piston. Each abutment section is seated in sliding contact with the round hub 17 so that the circular working spacevat'eachside of the oblique flange of the piston will be'divided radially by the abutment, and the overlapping extensions of the abutment extend upwardly into chamber 21, centrally between two separate horizontal intake and discharge openings 28 and 29 ada ted to be connected" by, pipes to the source 0 supply and a separate place of delivery.

Piston P is held in workingposition by a hardened steel bar 30. superposed directly upon the upper edges of the overlapping extensions 22-23 and confined at its upper edge Within a shallow groove 31 in the top .of chamber 21, see Figs. 8 and 13. In addition bar 30 carries two vertical pins 3232 which are spaced apart the same distance as the thickness of body 2 so that the pins may engage the flat sides thereof and lock the bar against longitudinal movement and displacement. Each abutment section has its reduced extension provided with a rightangled lip or lug 33 which projects into an angular recess 34 in the opposite abutment section, and the meeting faces of the overlapping extensions have parallel grooves 35 in which a coiled compression spring 36 may be confined to press the two abutment sec,- tions in opposite directions and hold the opposing edges 27 of the abutment members against the oblique wall or flange 20 of the piston. This working contact of the abutment sections with the piston is further fostered by reason of the differences in area at the inner ends of the abutment sections where a linear contact is provided with the piston and at the outer ends of the same abutment sections where fully exposed to the pressure of the fluid confined within the vertical passages 26 in the side plates. Thus the abutment sections slide freely through the slots 24 in the side plates and have aslight clearance in respect thereto on the side exposed to the fluid under pressure, thus permitting a constant pressure to be maintained in the vertical passages- 26 and cross bore 9, which pressure is applied equally to the outer ends of both abutment sections at all times during the operation of the pump. In Figs. 16 and 17, I show a modified ping blades 37 and 38 of substantially the I same shape and form as theabutmentsections 22' and 23 hereinbefore described, excepting that separate coiled springs 39 and 40 are confined within separate bores 41 and 42 in the mainbody part of each blade instead of a single spring 36 held in grooves 35. Springs 39 and 40 press outwardly against depending lugs 43 at the outer ends of the overlapping extensions 44, thereby holding the abutment sections or blades 37 and 38 against the oblique wall or flange 20 of the piston as indicated in Fig. 9.

What I claim is: I a

1. A rotary pump, comprising a body having a round working chamber, a sliding abutment formed of two sections overlapping each other and extending transversely of said chamber, a rotary member having an annular rib interposed between said sections and dividing said chamber obliquely into sepaof said chambered body by said rib, closure plates for the sides of said chambered body having pockets adapted to receive the ends of said abutment member, and said body having a separate transverse communicating opening of substantial size for said pockets.

3. A rotary pump, comprising a body having a Working chamber and inlet and outlet passages, closure plates for the sides of said body having slotted walls, a sliding abutment made in two sections having extensions overlapping each other supported and guided within and by said slotted walls, and a rotary member journaled within said plates having an oblique flange interposed between the abutment sections. a

4. A rotary pump, comprising a'body having ,a round chamber and inlet and outlet passages, closure plates for the sides of said chambered body having pockets. and slots opposite said chamber intermediate said inlet and outlet passages, a sectional abutment seated within said slots having overlapping extensions projecting into said pockets, a rotary member having an annular flange obliquely related to the inner walls of said closure lates, and a spring confined between said abutment sections and arranged to press the sections in opposite directions against said flange.

5. A rotary pump, comprising a chambered body having removable closure plates at its sides, a rotary member journaled in said transverse opening with said pockets.

and confined within said chambered body, a sliding abutment engaged by said rib, guide slots and receiving pockets within said clo sure plates for said sliding abutment, said body having inletand outlet passages upon opposite sides of said abutment, and a transverse opening in its top portion, and said plates having ferrules connecting the ends of 6. A rotary pump, comprising a body having a round working chamber and a transverse space open to said chamber andvinlet and outlet passages communicating with said space, closure platesfor said chamber at opposite sides of said body having pockets and slots adjacent said space, a sliding abutment extending at its opposite ends into said slots, a drive shaft journaled within said plates having a round enlargement confined within said round chamber and formed with an annular flange extending obliquely around it, gaskets interposed between said plates and body, and said plates having hub portions and ferrules over which said gaskets may be sleeved.

7. A'rotary pump, comprising a body having a working chamber and a rotary piston therein, an abutment member made in two overlapping pieces engaging said piston reciprocally, and a bar superposed upon said overlapping pieces having spaced pins interlocked with said body.

' 8. A rotary pump, comprising a body hav ing a working chamber, a rotary piston having an oblique Wall subdividing said'chamher, a sectional abutment having overlapping extensions extending transversely across said piston wall and provided with blade ,portions depending into said chamber, and springs interposed between the abutmentsections to press the same in opposite directions against said piston wall.

9. A rotary pump, comprising a body hav- 4 ing a working chamber and a rotary piston therein, an abutment member made in two overlapping pieces engagingsaid piston reciprocally and spring means adapted to press the sections in opposite directions against said piston.

In testimony whereof I affix my signature.

JOSEPH F. JAWoRoWsKI. 

